after Jürgen Sch. two cylinder heads from which we can use the valves, now the following procedure is planned (if I kept everything right): The valves from Jürgen's heads are made into mine, the valve guides are checked, of course the valves are ground in, new duct seals are installed. The hydropumps stay in there for the first time, hoping they've survived the blow in the valves. But we are missing the data of the engine (torques etc. and continue to be good tips. Is there a repair manual or something in that direction? Please don't stony, I'm a little architect and no engine builder!